SiC-IrSi3 for High Oxidation Resistance

Materials

Donatella Giuranno¹  Antonio Camarano²  Javier Narciso² 

[1] Institute of Condensed Matter Chemistry and Energy Technologies (ICMATE), National Research Council of Italy (CNR), Via De Marini 6, 16149 Genoa, Italy;Instituto Universitario de Materiales de Alicante (IUMA), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain;

关键词: sic composites;    reactive infiltration;    silicides;   

DOI  :  10.3390/ma13010098

来源: DOAJ

【 摘 要 】

SiC is a material with excellent mechanical and thermal properties but with a high production cost. Obtaining SiC by reactive infiltration is an attractive method with a much lower cost than the traditional sintering process. However, the reactive infiltration process presents a serious problem, which is the high residual silicon content, which decreases its applicability. The replacement of silicon with silicides is a widely used alternative. The present investigation shows the good mechanical properties of the SiC-IrSi₃ composite material obtained by reactive infiltration of SiC-C preforms with Ir−Si alloys. The thermomechanical analysis shows a high compatibility of silicide with SiC. The presence of the silicide shows a substantial improvement against the oxidation of the SiC-Si composites.

【 授权许可】

Unknown